After Long Fei's Primordial Spirit was destroyed, he could no longer pursue breakthroughs on the level of the Primordial Spirit and instead planned to attempt Slaying the Mortal Shell to Achieve Enlightenment, and to become a saint in his flesh.
Before he had broken through the Immortal Tribulation, he had attempted once to sever the Buddhist Sect's body, and in the end, repaid the Buddhist Sect's karma.
His physical body was refined from the bloodline of the Twelve Ancestral Witches.
Therefore, when he slays the Mortal Shell, he also slays the body of the Witch Tribe.
Among the Twelve Ancestral Witches, the Mystic Darkness Witch Ancestor controls the heavenly Water Elemental Force, living beneath the Northern Underworld Sea, the main water deity of heaven and earth.
Long Fei goes to the Northern Dark specifically to seek its opportunity.
He and Lin Yingying passed by Yang Valley Pass on their way north and threw a green pine into Wu Zhi's yard.
